Yellow Penguin, Thank you for your explanation on this. You've just answered my question.
Matthew Webber ([email protected]) On 12/01/2020 21:17, Yellow Penguin wrote: > The package liblensfun1 is a dependency of liblensfun-dev. Maybe you used > aptitude or used apt-get autoremove at a later time to remove any orphaned > package? If it got installed as a dependency of liblensfun-dev, it will no > longer be a dependency of any package after you uninstalled that. The > library liblensfun1.so.1 that you were missing is part of the liblensfun1 > package, not the -dev package. The same applies to the other ones. It's > safe to remove the -dev packages, but you will have to ensure that the > corresponding runtime packages are installed, and they are easily lost if > you don't explicitly install them or mark them as a dependency of something > else. > > On Sun, Jan 12, 2020 at 9:22 PM Matthew Webber <[email protected]> > wrote: > >> Carl, >> >> Thanks for this. I definitely did uninstall liblensfun-dev and not >> liblensfun. It may be that one is dependent on another, but that is >> definitely what I uninstalled through sudo apt-get remove liblensfun-dev. >> >> Other packages I installed during compilation were subsequently >> uninstalled without issue. Therefore I see it as an ffmpeg compilation, >> otherwise I'd see every other feature I uninstalled failing. I noticed >> the make and make install steps created and copied the other dependencies. >> >> I don't mind dynamic linking, but I assumed the compilation step of >> ffmpeg also compiled any dependent libraries it used. Obviously this is >> not clear in guides and instructions that you'd need to leave all the >> dev packages you use after compilation. >> >> Matthew Webber >> ([email protected]) >> >> On 12/01/2020 20:07, Carl Eugen Hoyos wrote: >>> Am So., 12. Jan. 2020 um 19:38 Uhr schrieb Matthew Webber >>> <[email protected]>: >>> >>>> I compiled ffmpeg on Ubuntu 18.04 perfectly fine. I installed a whole >>>> load of dev packages and compiled with lots of options, and all went >>>> smoothly. >>>> >>>> However when I removed the packages liblensfun-dev, libmodplug-dev, >>>> libcodec2-dev and libfdk-aac-dev ffmpeg failed to work. Looking deeper >>>> it is now missing liblensfun.so.1, libmodplug.so.1, libcodec2.so.0.7 and >>>> libfdk-aac.so.1. >>> So you did not uninstall liblensfun-dev but liblensfun >>> >>>> Re-installing those packages makes those components >>>> available and the program runs again. >>>> >>>> Does the compilation not create these files or embed them into ffmpeg? >>> No (at least not in general), and this question is not related to FFmpeg. >>> Once upon a time, no dynamic libraries existed, meaning that every binary >>> on a system contained copies of all linked libraries. As this wastes a >> lot of >>> space, dynamic linking was invented (decades ago). >>> Typical compilers default to dynamic linking. >>> >>>> Are there any options I need to ensure these are created so I no longer >>>> need these packages? I want to have program files that will work without >>>> any of the other packages installed. >>> You can add "--extra-ldflags=-static" to force static linking but your >>> distribution most likely will not provide a static lensfun library, so >> you >>> will have to compile all dependencies that you want yourself to >>> provide the necessary static libraries. >>> >>> But as said, all this is not related to FFmpeg. >>> >>> Carl Eugen >>> _______________________________________________ >>> ffmpeg-user mailing list >>> [email protected] >>> https://ffmpeg.org/mailman/listinfo/ffmpeg-user >>> >>> To unsubscribe, visit link above, or email >>> [email protected] with subject "unsubscribe". >> _______________________________________________ >> ffmpeg-user mailing list >> [email protected] >> https://ffmpeg.org/mailman/listinfo/ffmpeg-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
